File testing machine



Dec. 18, 1934. F. H. SMITH FILE TESTING MACHINE Filed Dec. 28, 1953 18 Sheets-Sheet 1 Dec. 18, 1934. F. H. SMI TH 1,984,769

FILE TESTING MACHINE Filed Dec. 28, 1935 I 18 Sheets-Sheet 2 awe/WM -5M/TH Dec. 18, 1934. F SMIT 1,984,769

FILE TESTING MACHINE Filed Dec. 28, 1933 18 Sheets-Sheet k5 Dec. 18, 1934. SMITH 1,984,769

FILE TESTING MACHINE Filed Dec. 28, 1935 18 sheets-sheets Dec. 18, 1934. F. H. SMITH FILE TESTING MACHINE Filed Dec. 28, 1935 18 Sheets-Sheet 6 ,F'. H. SMITH aw I @MyMM WQ Dec. 18, 1934. F. H. SMITH FILE TESTING MACHINE Filed Dec. 28, 1953 18 SheetsSheet '7 M T m 5: 0 1 9 Dec. 18, 1934. F. H. SMITH 1,984,769

FILE TESTING MACHINE Fi led Dec. 28, 1955"" 1s Sheets-Sheet s .F. H. SMITH abhor/M4141 Dec. 18, 1934. F. H. SMITH 1,984,769

FILE TESTING MACHINE Filed Dec. 28; 1935 18 Sheets-Sheet 9 Dec. 18, 1934. $M|TH 1,984,769

FILE TESTING MACHINE Filed Dec. 28, 1933 18 Sheets-Sheet 10 Dec. 18, 1934. #THsMITH I FILE' TESTING MACHINE Fild'Dec. 28,1933 1s Sheets-Sheet 11 awe/HM .F- H- SM/TH is Y I Dec. 18, 1934. s rr 1,984,769

FILE TESTING MACHINE I Filed Dec. 28, 1933 18 Sheets-Sheet l2 r HHHHIL uumuuuu uuuuuuu'm ummuum Dec. 18,1934. F. H. SMITH FILE TESTING MACHINE v FiledDec. 28, 1933 18 Sheets-Sheet 13 F. H. SMITH FILE TESTING MACHINE Dec. 18; 1934.

Filed Dec. 28, 1953 18 Sheets-Sheet 14 l I J 507/ 15 W 1 1 H. )SM/TH FILE TESTING MACHINE Filed Dec. 28, 1933 18 Sheets-Sheet 15 v /08\ 109 1' a 'TT I LJ 122%; [g a Dec. 18, 1934. F. H. SMITH FILE TESTING MACHINE Filed Dec. 28, 1935 l8 Sheets-Sheet 16 1 H SM/TH Dec 18, 1934. $M|TH 1,984,769

FILE TESTING MACHINE Filed Dec. 28, 1953 18 Sheets-Sheet l7 F H. SMITH Dec. 18, 1934. $M|TH 1,984,769

FILE TESTING MACHINE .F e Dc. 28, 1955 18 Sheets-Sheet 18 Patented Dec. 18, 1934 FILE TESTING MACHINE Frederick Herbert Smith, Cranston, a. 1. Application December-28, 1933,-Serial No. 704,314

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6 it impossible for the machine to favor any of the files. This is a feature the lack of which has characterized comparative testing machines as they have heretofore been constructed, for regardless of the precision with which two similar parts of a machine are made, there is inevitably enough inherent variation in them to make an appreciable cumulative difference in the work done by tools tested by such units after a number of repeated movements, so that files as tested entirely by different units of any machine are bound to show differences in cutting capacity, caused by variations in the units of the machine, and not truly indicative of the relative merits of the files.

The obiect of the present invention is to present to the working face of each file under test, successively and in rotation, a plurality of work pieces at constant pressure, all the files being moved across the work pieces simultaneously by a common carriage, so that every file at the end of the test shall have made the same number and length of strokes against each work piece, and with the same pressure, so that the conditions under which the files are tested are identical.

Another object of the invention is the provision of means for separately collecting and weighing the filings from each file, thus ascertaining the comparative cutting capacity of the files.

Still another object of the invention is the provision of a, file testing machine of the type described, as a demonstrating and educational appliance in which the filings from each file are not only weighed, but their comparative weights indicated on a series of dials.

Another object of the invention is the provision of means for selectively adapting the machine to the testing of flat files, triangular files,

' square files, or files of any other cross section,

and files of different lengths.

Other objects of the invention will appear as the following description of a preferred and practical embodiment of the file testing machine proceeds.

In the drawings:

Figure 1 is an end elevation of the file testing machine showing the files in position;

Figure 2 is a fragmentary elevation looking at the other end of the machine;

Figure 3 is a fragmentary plan of the parts shown in Figure 2;

v Figure 4 is a side elevation of the file testing machine;

Figure 5 is a side elevation of the upper por- 6 tion of the machine with parts broken away;

Figure 6 is a diagram showing the relative position of some of the parts of the machine;

Figure 7 is a side elevation of the tool revolving mechanism located at the upper part of the 10 machine;

Figure 8 is a front elevation of the part; shown in Figure 7;

Figure 9 is a section on the line' 9-9 of Figure 7; v

Figure 10 is a section on the line 10-10 of Figure 9;

Figure 11 is a section on the line 11-11 of Figure '1;

Figure 12 is a view similar to Figure 11 but 20 with the parts shown in a different phase of the operation;

Figure 13 is a section on the line 13-13 of Figure 11;

Figure 14 is a section on the line 14-14 of 25 Figure 13;

Figure 15 is-a section on the line 15-15 of Figure 12;

Figure 16 is a section on the line 16-16 of Figure 15;

Figure 17 shows the parts illustrated in Figure 16 in a difierent phase of the operation;

Figure 18 is a section on the line 18-18 of Figure 5;

Figure 19 is a section on the line 19-19 of 86 Figure 18;

Figure 20 is a front elevation of the sliding bracket adapted to hold the upper ends of the files;

Figure 21 is a side elevation of the sliding 40 bracket;

Figure 22 is a fragmentary perspective of the reciprocating rack gear;

Figure 23 is an elevation of the rack gear and file supporting bracket with parts being shown in section;

Figure 24 is a section on the line 24-24 of Figure 23;

Figure '25 is a section on the line 25-25 of Figure 23:

Figure 26 is a section on the line 26-26 of Figure 1; v

Figure 27 is a perspective view of the sliding bar shown in Figure 26;

Figure 28 is an elevation showing a fragment of the sliding bracket and attached thereto the bracket for supporting the tool revolving mecha- Figure 29 is an end elevation of the bracket for supporting the tool revolving mechanism;

Figure 30 is a face elevation of the locking disk used in connection with the tool revolving mechanism;

Figure 31 is a face elevation of the ratchet used in connection with the tool revolving mechanism;

Figure 32 is a section on the line 32-32 of Figure 4;

Figure 33 is a top plan view of the parts shown in Figure 32; v

Figure 34 is a section on the line 34-34 of Figure 32;

Figure 35 is an elevation of one of the cam segments to be attached to the part shown in Figure 34;

Figure 36 is a plan view of the cam segments shown in Figure 35;

Figure 37 is a plan view of a modified form of cam segments similar to that shown in Figure 36;

Figure 38 is a face elevation of the cam segments shown in Figure 37;

Figure 39 is a section taken on the line 39-39 of Figure 4 Figure 40 is a section taken on the line 40-40 of Figure 1;

Figure 41 is a section taken on the line 41-41 of Figure 40;

Figure 42 is a fragmentary elevation of the dial ratchet shown in Figure 41, showing a part of the cam mechanism and brake mechanism used to prevent movement of the work pieces;

Figure 43 is a perspective of one of the parts of the brake mechanism used to lock' the work pieces against movement;

Figure 44 is a section on the line 44-44 of Figure 39;

Figure 45 is a section on the line 45-45 of Figure 44 4 Figure 46 is a section on the line 46-46 of Figure 44;

Figure 46A is a diagrammatic detail view of the locking pawls used in connection with the ratchet bar shown in Figure 44;

Figure 47 is a detail perspective of one of the work pieces shown in Figure 44;

Figure 48 is a side elevation of the casting which is provided with chutes to receive the files and the filings dropping therefrom;

Figure 49 is a face elevation of the casting shown in Figure 48;

Figure 50 is a top plan view of the casting shown in Figure 49 with associated parts shown in dotted lines;

Figure'51 is a section on the line 51-51 of Figure 48;

Figure 52 is a section on the line 52-52 of Figure 51;

Figure 53 is a top plan view of the parts shown in Figure 51;

Figure 54 is a section on the line 54-54 of Figure 44;

Figure 55 is a plan view of the carriage that is provided with rollers and is arranged below the ratchet bars shown in Figure 54;

Figure 56 is a section taken on the line 56-56 of Figure 54;

Figure 57 is a detail perspective of the latch bar used in connection withthe ratchet bars;

Figure 58 is a section on the line 58-58 of Figure 1;

Figure 59 is a side elevation of the parts shown in Figure 58;

Figure 60 is a section taken on the line 60-60 of Figure 4;

Figure 61 is a section taken on the line 61-61 of Figure 60; I

Figure 62 is a bottom plan view partly in section of the plate used in connection with the tool revolving mechanism;

Figure 63 is a section on the line 63-63 of Figure 62;

Figure 64 is a section taken on the line 64-64 of Figure 12;

Figure 65 is a side elevation partly in section of the parts shown in Figure 64;

Figure 66 is a face elevation of a locking disk used in connection with the parts shown in Figure 65;

Figure 67 is a plan view of the locking disk shown in Figure 86;

Figure 68 is a face elevation partly in section of a-modified form of stop plate to be substituted for the one shown in Figure 65;

Figure 69 is a top plan view of the stop plate shown in Figure 68;

Figure '70 is a detail end elevation of the ratchet shown in Figure 84;

Figure 71 is a side elevatiton of the ratchet shown in Figure 70.

Referring now in detail to the numerous figures, and first adverting to the general assembly illustrated in Figure 1, the machine is constituted by a brl'fsil having a standard 2. A shaft 3 is carried Qy suitable bearings in said standard, said shaft carrying a sprocket 4 which by means of a chain indicated diagrammatically in Figure 4 is connected to a source of power indicated by the electric motor 6. The shaft 3 has a small gear '7 which drives a bull wheel 8.

Now, referring to Figure 5 it will be observed that the bull wheel 8 has a crank pin 9 journalled in a block which slides in a guide slot 11 formed in an oscillating lever 12, the latter being pivoted at 12' to a fixed bracket 14. Rotation of the bull wheel causes oscillation of the lever 12. Referring once again to Figure 1, the front end of the oscillating lever 12 is shown connected to a substantially vertically depending link 13. This element can be seen on an enlarged scale in Figure 18. A carriage 110 which is also best shown in Figure 18 is pivotally connected to the lower end of the link 13, the connecting pin 16 being indicated in broken lines. Details of the carriage are shown in Figures and 21, it being noted'that the carriage has side flanges 1"! which slide in vertical guideways provided behind the gibs 18 screwed to the standard. Aflixed to the lower end of the carriage is a member 19 havinga transverse track 20 and a rack bar 21, and below said rack bar and forwardly of the same, the member 19 is provided with vertical axially parallel bearing apertures 22 adapted to receive the chuck spindles 23. shown in Figure 18, the upper ends of which spindles carry gears 24, meshing with the rack bar 21. and rotated by the reciprocation of said rack bar. The chuck spindles are shown in detail in Figure 23, being each provided near its lower end with a shoulder and a centering boss 26, the latter being internally apertured as at 2'7, from the lower end of the spindle. Said spindles are designed to have file chucks 28 attached thereto. 

